Home / 666.27-998.66-319.32

Finding the Fourth Proportional to 666.27, 998.66 and 319.32

Calculator

Solution

The fourth proportional to 666.27, 998.66 and 319.32 is: 478.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.27 : 998.66 = 319.32 : x
  2. Step 2: Convert to fraction form
    666.27/998.66 = 319.32/x
  3. Step 3: Cross multiply
    666.27x = 998.66 × 319.32
  4. Step 4: Simplify right side
    666.27x = 318,890.51
  5. Step 5: Solve for x
    x = 318,890.51/666.27
  6. Step 6: Final answer
    x = 478.62

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.